Ear muff



FIG. 1 is a front perspective view of an ear muff, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is another front, perspective view of the ear muff shown in a used condition with the user holding the ear muff;

FIG. 8 is a rear, perspective view of the ear muff shown in a used condition with the user holding the ear muff; and,

FIG. 9 is another rear, perspective view of the ear muff shown in a used condition attached to the user.

The broken lines in FIGS. 1-9 show environment and form no part of the claimed design. 

CLAIM The ornamental design for an ear muff, as shown and described. 